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If you are currently taking medication and are unsure of whether it is safe to take Viagra, you should consult a qualified medical professional before proceeding. As a result, a higher amount of a drug stays in your body for a longer time. Cialis differs from both Viagra and Levitra with regard to onset and duration of action. Table 3: Hemodynamic Data in Patients with Stable Ischemic Heart Disease after Intravenous Administration of 40 mg of Sildenafil In a double-blind study, 144 patients with erectile dysfunction and chronic stable angina limited by exercise, not receiving chronic oral nitrates, were randomized to a single dose of placebo or VIAGRA 100 mg 1 hour prior to exercise testing. In the nonpregnant rat the AUC at this dose was about 20 times human AUC. Interaction With Other Drugs Viagra side effects may be increased by certain other medications – it is not recommended to mix some medicines.

We hope that by offering an intuitive and beautiful interface to City Hall for small business owners, we can help entrepreneurs feel that the City is a partner and ally in their journey to opening day.An Introduction to Viagra Side Effects As with any medicine, there are possible side effects with Viagra ® ( sildenafil citrate). A: It costs pharmacies a lot of money to purchase brand-name drugs from wholesalers.

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When a single 100 mg dose of VIAGRA was administered with erythromycin, a moderate CYP3A4 inhibitor, at steady state (500 mg bid for 5 days), there was a 160% increase in sildenafil Cmax and a 182% increase in sildenafil AUC. Store at room temperature away from moisture and heat. The safety and efficacy of VIAGRA with other PDE5 inhibitors, including REVATIO, have not been studied [see WARNINGS AND PRECAUTIONS]. Treatment with doxazosin continued for at least 7 days after dose period 1. If you do experience side effects that continue over time or become troublesome while using Viagra, you should contact your doctor to discuss these.

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In addition to the active ingredient, sildenafil citrate, each tablet contains the following inactive ingredients: microcrystalline cellulose, anhydrous dibasic calcium phosphate, croscarmellose sodium, magnesium stearate, hypromellose, titanium dioxide, lactose, triacetin, and FD & C Blue #2 aluminum lake. If possible, use one pharmacy for all your prescription medications and over-the-counter products. How it works Sildenafil belongs to a class of drugs called phosphodiesterase type 5 (PDE5) inhibitors.

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Thereafter, VIAGRA 100 mg or matching placebo was administered simultaneously with doxazosin 4 mg (14 subjects) or doxazosin 8 mg (6 subjects) in standard crossover fashion. You may need to have your blood pressure monitored while you take this drug. Sildenafil was not carcinogenic when administered to mice for 18-21 months at dosages up to the Maximum Tolerated Dose (MTD) of 10 mg/kg/day, approximately 0. However, some women observe a decrease or absence in sex drive due to a condition called female sexual interest/arousal disorder. All three were taking VIAGRA 100 mg, and all three reported mild adverse events at the time of reductions in standing SBP, including vasodilation and lightheadedness. Figure 3: Mean Standing Systolic Blood Pressure Change from Baseline Blood pressure was measured after administration of VIAGRA at the same times as those specified for the first doxazosin study. Viagra should not be used in any patient who takes nitrates for chest pain. Mean sildenafil plasma concentrations measured after the administration of a single oral dose of 100 mg to healthy male volunteers is depicted below: Figure 5: Mean Sildenafil Plasma Concentrations in Healthy Male Volunteers Absorption and Distribution VIAGRA is rapidly absorbed. There are two other alternatives, Levitra (vardenafil) and Cialis (tadalafil), but they are newer and cost even more. The cause is usually related to a decrease in the blood supply to the penis as well as to injury to the nerves that are responsible for the erection mechanism. Transient vision disturbances were reported by 14% of those on Viagra and 2% of those on placebo.